* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #e7eaee; color: #1b2128; font: 14px/1.45 "IBM Plex Sans", "Noto Sans SC", sans-serif; letter-spacing: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: #f6f7f9; border: 1px solid #c5cad3; border-radius: 6px; padding: 6px 10px; cursor: pointer; }
button:hover { border-color: #1b2128; }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { width: 100%; padding: 7px 8px; border: 1px solid #c5cad3; border-radius: 6px; background: #fff; }
textarea { resize: vertical; }
.danger { color: #9b2c2c; }
.muted { color: #5d6570; }
.error { color: #9b2c2c; margin: 0; }
.gate { min-height: 100%; display: grid; place-items: center; }
.gate-form { width: min(360px, 92vw); background: #f6f7f9; border: 1px solid #c5cad3; border-radius: 6px; padding: 24px; display: grid; gap: 12px; }
.gate-form h1 { margin: 0; font-size: 20px; }
.shell { height: 100%; display: grid; grid-template-columns: 280px minmax(0, 1fr); grid-template-rows: 48px 1fr; }
.top { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; padding: 0 12px; border-bottom: 1px solid #c5cad3; background: #f6f7f9; }
.brand { font-size: 15px; }
.flash { margin: 0; font-size: 12px; }
.flash.error { color: #9b2c2c; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.menu { position: relative; }
.menu summary { list-style: none; cursor: pointer; border: 1px solid #c5cad3; border-radius: 6px; padding: 6px 10px; background: #f6f7f9; }
.menu summary::-webkit-details-marker { display: none; }
.menu-pop { position: absolute; right: 0; top: 110%; min-width: 120px; background: #f6f7f9; border: 1px solid #c5cad3; border-radius: 6px; display: grid; z-index: 6; }
.menu-pop button { border: 0; border-radius: 0; text-align: left; }
.icon-btn { display: none; min-width: 32px; }
.list-pane { border-right: 1px solid #c5cad3; background: #f6f7f9; padding: 10px; overflow: auto; }
.seg { display: flex; flex-wrap: wrap; gap: 0; margin: 8px 0; }
.seg button { border-radius: 0; margin-left: -1px; }
.seg button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.seg button:last-child { border-radius: 0 6px 6px 0; }
.seg .is-on { background: #1f6a4d; color: #fff; border-color: #1f6a4d; }
.note-list { display: grid; }
.note-row { display: grid; gap: 4px; width: 100%; text-align: left; border: 0; border-bottom: 1px solid #c5cad3; border-radius: 0; background: transparent; padding: 8px 6px; }
.note-row.is-on { background: #e8f0ec; }
.term { font-weight: 600; }
.meta { display: flex; gap: 8px; color: #5d6570; font-size: 12px; }
.mark { color: #8a5a12; }
.mark.fail { color: #9b2c2c; }
.workspace { min-width: 0; display: grid; grid-template-rows: minmax(210px, 44%) minmax(0, 1fr); }
.note-pane, .chat-pane { padding: 12px; min-width: 0; }
.note-pane { border-bottom: 1px solid #c5cad3; overflow: auto; }
.flags { display: flex; gap: 6px; margin-bottom: 8px; }
.flags span { font-size: 12px; color: #8a5a12; border: 1px solid #d8c39a; border-radius: 999px; padding: 1px 8px; }
#note-form { display: grid; gap: 8px; background: #f6f7f9; border: 1px solid #c5cad3; border-radius: 6px; padding: 12px; }
.row-head { display: flex; justify-content: space-between; align-items: center; color: #5d6570; font-size: 12px; }
.example-row { display: grid; grid-template-columns: 1fr 1fr 32px; gap: 6px; margin-top: 6px; }
.raw { white-space: pre-wrap; background: #fff; border: 1px solid #c5cad3; border-radius: 6px; padding: 8px; min-height: 40px; margin: 0; }
.assets { display: flex; gap: 8px; flex-wrap: wrap; }
.assets img { max-height: 88px; border: 1px solid #c5cad3; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.chat-pane { display: grid; grid-template-rows: 1fr auto; min-height: 0; }
.transcript { overflow: auto; display: grid; align-content: start; gap: 8px; }
.bubble { background: #f6f7f9; border: 1px solid #c5cad3; border-radius: 6px; padding: 8px 10px; white-space: pre-wrap; }
.bubble.user { justify-self: end; max-width: 80%; }
.bubble.error { color: #9b2c2c; }
.capture-card { text-align: left; }
.kicker { color: #5d6570; font-size: 12px; }
.composer { display: grid; gap: 8px; }
.composer.is-over { outline: 1px dashed #1f6a4d; }
.image-preview { display: flex; gap: 8px; align-items: center; }
.image-preview img { max-height: 64px; border: 1px solid #c5cad3; }
.composer-row { display: flex; gap: 8px; }
#btn-send { margin-left: auto; background: #1f6a4d; color: #fff; border-color: #1f6a4d; }
.backdrop { display: none; }
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .icon-btn { display: inline-block; }
  .list-pane { display: none; }
  .list-pane.is-open { display: block; position: absolute; top: 48px; left: 0; bottom: 0; width: min(88vw, 320px); z-index: 5; }
  .backdrop:not([hidden]) { display: block; position: absolute; inset: 48px 0 0; background: rgba(27,33,40,.28); z-index: 4; }
  .composer { position: sticky; bottom: 0; background: #e7eaee; padding-top: 8px; }
}